@storybook/addon-svelte-csf/dist/utils/identifier-utils.js

Allows to write stories in Svelte syntax

import { sanitize } from '@storybook/csf';
/**
 * @example storyIdToExportName('some-story') => 'SomeStory'
 */
export const storyIdToExportName = (storyId) => storyId
    .split('-')
    .map((part) => part.charAt(0).toUpperCase() + part.slice(1))
    .join('');
/**
 * @example exportNameToStoryId('SomeStory') => 'some-story'
 */
export const exportNameToStoryId = (exportName) => exportName.replace(/([a-z0–9])([A-Z])/g, '$1-$2').toLowerCase();
/**
 * @example storyNameToId('Some Long Story Name!') => 'some-long-story-name'
 */
export const storyNameToId = (name) => 
// add a space before all caps and use utility from @storybook/csf to sanitize the resulting string
sanitize(name.replace(/([A-Z])/g, ' $1').trim());
/**
 * @example storyNameToExportName('Some Long Story Name!') => 'SomeLongStoryName'
 */
export const storyNameToExportName = (name) => storyIdToExportName(storyNameToId(name));
/**
 * Check if a string is a valid JavaScript variable name
 * @example isValidVariableName('SomeStory') => true
 * @example isValidVariableName('Some_Story') => true
 * @example isValidVariableName('Some Story') => false
 * @example isValidVariableName('Some-Story') => false
 * @example isValidVariableName('default') => false
 *
 * @see https://github.com/shinnn/is-var-name
 */
export const isValidVariableName = (str) => {
    if (typeof str !== 'string') {
        return false;
    }
    if (str.trim() !== str) {
        return false;
    }
    try {
        new Function(str, 'var ' + str);
    }
    catch (_) {
        return false;
    }
    return true;
};
/**
 * Function to convert a non valid string template name to a valid identifier preventing
 * clashing with other templates with similar names.
 *
 * Stolen with 🧡 from the svelte codebase by @paoloricciuti
 *
 * @param str the template name
 * @returns a hash based on the content of the initial string which is a valid identifier
 */
export function hashTemplateName(str) {
    if (isValidVariableName(str))
        return str;
    str = str.replace(/\r/g, '');
    let hash = 5381;
    let i = str.length;
    while (i--)
        hash = ((hash << 5) - hash) ^ str.charCodeAt(i);
    return `template_${(hash >>> 0).toString(36)}`;
}